Slim Pickings - Aditya Bidikar's braindump.

… see how a completely paralyzed man, who could otherwise only communicate by moving his eyes, uses his mind to type out thoughts on a computer screen. Of course, the process is very slow going—each letter takes up to 20 seconds to type. Reporter Scott Pelley donned the controller skull cap, and watched a screen of flashing letters to try it out himself. When the letter he was thinking of highlighted, he’d think “that’s it!” and that signal of recognition would type the letter on-screen.